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Fig. 147: Sagittal cross seetion through the uterine hom of a marę in diestrus. The hypoechoic peritoneal border (large ar-rows) and the Iransitkm frora myometriurn to endometrium (smali arrows) can be scen.

Fig. 1.48: Cross seetion through uterine hom during e< Due to the endometrial edema alternating areas of h echoic and morę echoic tissues can be seen. This causes typical spoke-wheel appearance of the uterine hom du estrus. Arrows indicate the transition from myo- to en. metrium.

Fig. 1.49: Prominent spoke-wheel patiem of the uterus during    Fig. 1.50: Extensive edema of the endometrial fołds dureu:

estrus. Arrows indicate the peritoneal border of the uterus. estrus. The endometrial folds with their echoic basc, hjpo

echoic edematous central area and hyperechoic surface bu^e into the uterine lumen (L) filled with seeretions.